عنوان

Novel Delivery Systems for Bioactives from Tomato (Solanum lycopersicum L.) Pomace Extracts:

Number

TLpq2404055703

.Language of Text, Soundtrack etc

انگلیسی

Title Proper

Novel Delivery Systems for Bioactives from Tomato (Solanum lycopersicum L.) Pomace Extracts:

General Material Designation

[Thesis]

First Statement of Responsibility

Corrêa Filho, Luiz Carlos

Title Proper by Another Author

Characterization and Release Studies

Name of Publisher, Distributor, etc.

Universidade de Lisboa (Portugal)

Date of Publication, Distribution, etc.

2019

Specific Material Designation and Extent of Item

180

Dissertation or thesis details and type of degree

Ph.D.

Body granting the degree

Universidade de Lisboa (Portugal)

Text preceding or following the note

2019

Text of Note

The production of functional food products rich in natural bioactive compounds, with the intention of taking advantage of their health benefits, is an important target of the food industry to answer the growing interest of consumers for healthy food. Tomato pomace is rich in carotenoids, mainly lycopene, which have been related to important bioactive properties. Within this context, this work was focused on the stabilization of a tomato pomace ethanolic extract using microencapsulation by spray drying with arabic gum and inulin as wall materials, aiming at its incorporation in food matrices. A first insight on carotenoids microencapsulation with Arabic gum was assessed using model carotenoid molecule (β-carotene). Afterwards, the microencapsulation process of tomato pomace extract using inulin and arabic gum as wall materials was successfully optimized, focusing on the evaluation of the effect of drying temperature and the wall material concentration on drying yield, loading capacity and antioxidant activity of encapsulated bioactives. Both wall materials allowed the production of microparticles loaded with tomato pomace carotenoids. The optimized drying conditions were 10% wall material concentration, and drying temperatures of 160 and 200 °C for inulin and arabic gum, respectively. Finally, particles produced under optimized conditions were evaluated for their storage stability and in vitro release of lycopene. Inulin has shown to be the most efficient wall material in maintaining bioactives stability during microcapsules storage after production. In addition, inulin microcapsules demonstrated a higher bioactives protection ability against simulated gastric conditions, either alone or incorporated in a selected food product (liquid yoghurt), enabling a preferential release in simulated intestinal fluid. Overall, it is envisaged a good potential for the microcapsules of tomato pomace extracts to be incorporated in foods systems with diverse chemical and physical properties

Food science

Corrêa Filho, Luiz Carlos

Electronic name

p

[Thesis]

276903

a

Y